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Issue 6771045: Never use classic code generator. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Address comments and fix testing Created 9 years, 8 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution. 11 // with the distribution.
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4252 bool has_only_simple_this_property_assignments, 4252 bool has_only_simple_this_property_assignments,
4253 FixedArray* this_property_assignments); 4253 FixedArray* this_property_assignments);
4254 4254
4255 // Clear information on assignments of the form this.x = ...; 4255 // Clear information on assignments of the form this.x = ...;
4256 void ClearThisPropertyAssignmentsInfo(); 4256 void ClearThisPropertyAssignmentsInfo();
4257 4257
4258 // Indicate that this function only consists of assignments of the form 4258 // Indicate that this function only consists of assignments of the form
4259 // this.x = y; where y is either a constant or refers to an argument. 4259 // this.x = y; where y is either a constant or refers to an argument.
4260 inline bool has_only_simple_this_property_assignments(); 4260 inline bool has_only_simple_this_property_assignments();
4261 4261
4262 inline bool try_full_codegen();
4263 inline void set_try_full_codegen(bool flag);
4264
4265 // Indicates if this function can be lazy compiled. 4262 // Indicates if this function can be lazy compiled.
4266 // This is used to determine if we can safely flush code from a function 4263 // This is used to determine if we can safely flush code from a function
4267 // when doing GC if we expect that the function will no longer be used. 4264 // when doing GC if we expect that the function will no longer be used.
4268 inline bool allows_lazy_compilation(); 4265 inline bool allows_lazy_compilation();
4269 inline void set_allows_lazy_compilation(bool flag); 4266 inline void set_allows_lazy_compilation(bool flag);
4270 4267
4271 // Indicates how many full GCs this function has survived with assigned 4268 // Indicates how many full GCs this function has survived with assigned
4272 // code object. Used to determine when it is relatively safe to flush 4269 // code object. Used to determine when it is relatively safe to flush
4273 // this code object and replace it with lazy compilation stub. 4270 // this code object and replace it with lazy compilation stub.
4274 // Age is reset when GC notices that the code object is referenced 4271 // Age is reset when GC notices that the code object is referenced
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4454 // Bit positions in start_position_and_type. 4451 // Bit positions in start_position_and_type.
4455 // The source code start position is in the 30 most significant bits of 4452 // The source code start position is in the 30 most significant bits of
4456 // the start_position_and_type field. 4453 // the start_position_and_type field.
4457 static const int kIsExpressionBit = 0; 4454 static const int kIsExpressionBit = 0;
4458 static const int kIsTopLevelBit = 1; 4455 static const int kIsTopLevelBit = 1;
4459 static const int kStartPositionShift = 2; 4456 static const int kStartPositionShift = 2;
4460 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1); 4457 static const int kStartPositionMask = ~((1 << kStartPositionShift) - 1);
4461 4458
4462 // Bit positions in compiler_hints. 4459 // Bit positions in compiler_hints.
4463 static const int kHasOnlySimpleThisPropertyAssignments = 0; 4460 static const int kHasOnlySimpleThisPropertyAssignments = 0;
4464 static const int kTryFullCodegen = 1; 4461 static const int kAllowLazyCompilation = 1;
4465 static const int kAllowLazyCompilation = 2; 4462 static const int kLiveObjectsMayExist = 2;
4466 static const int kLiveObjectsMayExist = 3; 4463 static const int kCodeAgeShift = 3;
4467 static const int kCodeAgeShift = 4;
4468 static const int kCodeAgeMask = 0x7; 4464 static const int kCodeAgeMask = 0x7;
4469 static const int kOptimizationDisabled = 7; 4465 static const int kOptimizationDisabled = 6;
4470 static const int kStrictModeFunction = 8; 4466 static const int kStrictModeFunction = 7;
4471 4467
4472 private: 4468 private:
4473 #if V8_HOST_ARCH_32_BIT 4469 #if V8_HOST_ARCH_32_BIT
4474 // On 32 bit platforms, compiler hints is a smi. 4470 // On 32 bit platforms, compiler hints is a smi.
4475 static const int kCompilerHintsSmiTagSize = kSmiTagSize; 4471 static const int kCompilerHintsSmiTagSize = kSmiTagSize;
4476 static const int kCompilerHintsSize = kPointerSize; 4472 static const int kCompilerHintsSize = kPointerSize;
4477 #else 4473 #else
4478 // On 64 bit platforms, compiler hints is not a smi, see comment above. 4474 // On 64 bit platforms, compiler hints is not a smi, see comment above.
4479 static const int kCompilerHintsSmiTagSize = 0; 4475 static const int kCompilerHintsSmiTagSize = 0;
4480 static const int kCompilerHintsSize = kIntSize; 4476 static const int kCompilerHintsSize = kIntSize;
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6657 } else { 6653 } else {
6658 value &= ~(1 << bit_position); 6654 value &= ~(1 << bit_position);
6659 } 6655 }
6660 return value; 6656 return value;
6661 } 6657 }
6662 }; 6658 };
6663 6659
6664 } } // namespace v8::internal 6660 } } // namespace v8::internal
6665 6661
6666 #endif // V8_OBJECTS_H_ 6662 #endif // V8_OBJECTS_H_
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